Machine for grinding rollers.



G, -WEEKS. 4 MAOHINE For: gnmnme ROLLERS. I APPLICATION FILED JAN. 4,1910.

WIT/V5851: Q' f/WEWEQR.

min-95d; July26,1910.

vice or member; Fig. 2 is an end view of the arren smarter-ear orbs.

GEORGE WEEKS, 0 CHELMSFORD. ENGLAND. ASSIGNOR TO THE HOFFMALNN' MANU-PAC/TUBING COMPANY LIMITED, OF LONDON, ENGLAND.

MACHINE FOR GRINDING ROLLERS.

Specification of Letters Patent.

Patented July 26, 1910.

Application filed January 4, 1910. Serial No. 536,259.

To all whom it may concern:

Be it known that l, GEORGE Venus, a subject of His Majesty the King oiGreat Britain, residing at Chelmsford, Essex, England, have invented acertain new and useful Improvement in Machines for Grind ing Rollers, ofwhich the following is a specification.

This invention relates to an improvement in machines for grindingrollers particularly com 'iaratively small rollers such as are used forroller bearings.

According to the invention rollers a re ground and finished betweenmembers or disks, preferably a fixed member (of iron and a.mo able oneor disk (of abrasive material) one of such members having a groove orgrooves formed therein for holding such rollers or roller blanks in sucha manner that they may have a t "avcling rolling movement therein inpart for the purpose of enabling them to be changed end for end ashereinafter described in relation to the groove or grooves it desiredand in part to enable them to travel easily through the groove and alsoto be best ground or abraded tor which purpose the holding memberpresents onl vone face of the roller to the grind ing mcmber as is donein ball grinding with this-class of machine. The machine by'thetraveling rolling movement of the rollers is alone distinguished frommachines for grinding rollers in which the rollers have a traiclingaxial movement in their holding device apart from other 'l'undamentaldili'erences between them. The machine is preterably -l'ur't'herprovided with a device or dcvices adapted to guide and transfer therollers from groove to groove or from an exit to an entrance end of thesame groove and at; the same time if desired reverse the end for endpositions of said rollers relative to the groove or grooves'of theholding member. In practice it is found that. the use of the endreversing device described above, prevents to a la rge extent, unevengrinding of the aol-lcrs.

To enable the invention to be fully understood it will now be describedwith reference to the accompanying drawings, in which is illustrated aportion of a machine sutlicicnt to show an example of same.

Figure is a face view of the holding deafter leaving the ex holdingmember and grinding member or disk; and Fig. 3 is a plan of Fig. 2 atright angles to same.

in these drawings 1 is a fixed disk on which the holding device 2 (oneonly being shown) is mounted, and 3 is the grinding or abrading mcn'iberor disk, the fixed disk being shown as supported by a shaft 4 and thegrinding disk by a shaft 5 which latter is capable of being rotated asby a suitable pulley. The holding device in the form shown is straight,and consists of two bracket shaped bars 6, 7 the bases of which are letinto the disk 1 while their flanges oppose one another with a spacebetween, which flanges guide and through which space can travel androtate at right angles to the flanges the rollers 8 to be ground, forwhich purpose the depth of the flanges is such that a portion of thefaces of the v rollers ca 11, pro ect therefrom.

The holding device is arranged as shown to form a chord in respect oi.the face of the abrading disk as has been before proposed for rollerholding dcvicesin other forms of machines. In the form actually shownalthough afixed disk -1 is illustrated it will be obvious that it isacting onlyvas a support for a straight holder .2 applied to the faceof'same, and which holder could be otherwise carried,

To each end of the holding device inconnccted the ends of a. transferdevice or chute 9 so that an endless passa i f d ith t groove of eholder. This chute 9 has a half-turn formed in it at 10 (Fig. 3) sothattherollers are reversed end for end du ing their travel t. roughsame so that end of the grooved holder/6 they are presented again toitthe other 'wa "up nt the entrance end.

.It -wil be seen that the rotation of the grinding disk a a-inst thefaces of the rollers will not .on y grind same but will traverse themthrough the grooved holder 6 with a rolling motlon, the abrasive actionbeing greatest toward the outer edges of the disk while the rollingaction is way between these points. i What I claim is 1. A machine forgrinding rollers, com: prising in combinationan abrading member having aplain surface, a holding member angleslongitudinally of the groove so tat midi -having'a groove to hold the rollers at ri ht they have atraveling rolling movement therein, and whereby they are prevented fromtwisting, and to present them in a straight line to the abrading member,and means for moving one of the members.

2. A machine for grinding rollers comprising in combination a holdingmember having a groove to hold the rollers so that they have a travelingrolling movement therein, an abrading member to which they are presentedby such holding member,

1 means for changing the end for end positions of the rollers relativeto the groove,

- and means for moving one of the members.

3. A machine for grinding rollers comprising in combination an abradingmember, a holding'member provided with a straight groove arranged toform a chord in respect of the face of the abrading disk, and to holdthe rollers so that they have a traveling rolling movement therein, andmeans for moving one of the members. i

4. A machine for grinding rollers coinprising ll combination an abradingmember having a plain surface, a holding member having a groove to holdthe rollers so that they have a traveling rolling movement therein andto present them to the abrading member, a transferring device totransfer the rollers from the exit to the entrance of 30 a groove andmeans for moving one of the members. 7

In testimony whereof I have hereunto set my hand in the presence of twosnbscrdnng w1tnesses.

GEORGE WEEKS;

\Vitnesses G. F. BARRETT, C. A. BARRETT.

